Bug 712835 - SELinux is preventing /usr/lib/cups/backend/mfp from 'execute' accesses on the file /usr/lib64/libmfp.so.1.0.1.
Summary: SELinux is preventing /usr/lib/cups/backend/mfp from 'execute' accesses on th...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: rawhide
Hardware: x86_64
OS: Linux
unspecified
medium
Target Milestone: ---
Assignee: Miroslav Grepl
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: setroubleshoot_trace_hash:17bcd1a3b14...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-06-13 10:28 UTC by johnhalton+bugzilla
Modified: 2011-06-13 11:19 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-06-13 10:49:03 UTC
Type: ---


Attachments (Terms of Use)

Description johnhalton+bugzilla 2011-06-13 10:28:54 UTC
SELinux is preventing /usr/lib/cups/backend/mfp from 'execute' accesses on the file /usr/lib64/libmfp.so.1.0.1.

*****  Plugin catchall (100. confidence) suggests  ***************************

If you believe that mfp should be allowed execute access on the libmfp.so.1.0.1 file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# grep mfp /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:cupsd_t:s0-s0:c0.c1023
Target Context                unconfined_u:object_r:admin_home_t:s0
Target Objects                /usr/lib64/libmfp.so.1.0.1 [ file ]
Source                        mfp
Source Path                   /usr/lib/cups/backend/mfp
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.9.16-26.fc15
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux fedora.pinecrest 2.6.38.7-30.fc15.x86_64 #1
                              SMP Fri May 27 05:15:53 UTC 2011 x86_64 x86_64
Alert Count                   8
First Seen                    Fri 06 May 2011 06:43:40 BST
Last Seen                     Mon 13 Jun 2011 10:25:25 BST
Local ID                      ae6f087d-3d58-47b5-909e-920f2f1e987f

Raw Audit Messages
type=AVC msg=audit(1307957125.323:290): avc:  denied  { execute } for  pid=20880 comm="mfp" path="/usr/lib64/libmfp.so.1.0.1" dev=dm-0 ino=149982 scontext=system_u:system_r:cupsd_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:admin_home_t:s0 tclass=file


type=SYSCALL msg=audit(1307957125.323:290): arch=x86_64 syscall=mmap success=no exit=EACCES a0=359ca00000 a1=906b30 a2=5 a3=802 items=0 ppid=20877 pid=20880 auid=4294967295 uid=4 gid=7 euid=4 suid=4 fsuid=4 egid=7 sgid=7 fsgid=7 tty=(none) ses=4294967295 comm=mfp exe=/usr/lib/cups/backend/mfp subj=system_u:system_r:cupsd_t:s0-s0:c0.c1023 key=(null)

Hash: mfp,cupsd_t,admin_home_t,file,execute

audit2allow

#============= cupsd_t ==============
#!!!! This avc is allowed in the current policy

allow cupsd_t admin_home_t:file execute;

audit2allow -R

#============= cupsd_t ==============
#!!!! This avc is allowed in the current policy

allow cupsd_t admin_home_t:file execute;

Comment 1 Dominick Grift 2011-06-13 10:36:45 UTC
This file "libmfp.so.1.0.1" was moved from /root to /usr/lib64.

When you move a file , you also move its context.

The cupsd_t is not allowed to execute files with the admin_home_t type.

Please run:

restorecon -v /usr/lib64/libmfp.so.1.0.1

This will reset the type of the libmfp.so.1.0.1 to lib_t, which is the default type for files in /usr/lib64.

When you move a file be sure to run restorecon over the target.

When you use cp instead of mv, the target will get the default type of the target location as opposed to using mv.

Comment 2 Miroslav Grepl 2011-06-13 10:49:03 UTC
Please run 

# restorecon -v /usr/lib64/libmfp.so.1.0.1

as Dominick suggests and remove your local policy with this rule.

# semodule -r mypol

Comment 3 johnhalton+bugzilla 2011-06-13 11:09:56 UTC
Thanks. Apologies for opening unnecessary bug.

Comment 4 Miroslav Grepl 2011-06-13 11:19:26 UTC
No problem.


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